package com.genersoft.iot.vmp.gb28181.controller;

import com.genersoft.iot.vmp.common.InviteInfo;
import com.genersoft.iot.vmp.common.InviteSessionType;
import com.genersoft.iot.vmp.common.StreamInfo;
import com.genersoft.iot.vmp.conf.UserSetting;
import com.genersoft.iot.vmp.conf.exception.ControllerException;
import com.genersoft.iot.vmp.conf.exception.ServiceException;
import com.genersoft.iot.vmp.conf.security.JwtUtils;
import com.genersoft.iot.vmp.gb28181.bean.Device;
import com.genersoft.iot.vmp.gb28181.bean.DeviceChannel;
import com.genersoft.iot.vmp.gb28181.service.IDeviceChannelService;
import com.genersoft.iot.vmp.gb28181.service.IDeviceService;
import com.genersoft.iot.vmp.gb28181.service.IInviteStreamService;
import com.genersoft.iot.vmp.gb28181.service.IPlayService;
import com.genersoft.iot.vmp.gb28181.transmit.callback.DeferredResultHolder;
import com.genersoft.iot.vmp.gb28181.transmit.callback.RequestMessage;
import com.genersoft.iot.vmp.gb28181.transmit.cmd.impl.SIPCommander;
import com.genersoft.iot.vmp.service.bean.InviteErrorCode;
import com.genersoft.iot.vmp.vmanager.bean.ErrorCode;
import com.genersoft.iot.vmp.vmanager.bean.StreamContent;
import com.genersoft.iot.vmp.vmanager.bean.WVPResult;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.security.SecurityRequirement;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.servlet.http.HttpServletRequest;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.ObjectUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.context.request.async.DeferredResult;
import javax.sip.InvalidArgumentException;
import javax.sip.SipException;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.ParseException;
import java.util.UUID;

/**
 * @author lin
 */
@Tag(name = "视频回放")
@Slf4j
@RestController
@RequestMapping("/api/playback")
public class PlaybackController {

    @Autowired
    private SIPCommander cmder;

    @Autowired
    private IInviteStreamService inviteStreamService;

    @Autowired
    private IPlayService playService;

    @Autowired
    private DeferredResultHolder resultHolder;

    @Autowired
    private UserSetting userSetting;

    @Autowired
    private IDeviceService deviceService;

    @Autowired
    private IDeviceChannelService channelService;

    @Operation(summary = "开始视频回放", security = @SecurityRequirement(name = JwtUtils.HEADER))
    @Parameter(name = "deviceId", description = "设备国标编号", required = true)
    @Parameter(name = "channelId", description = "通道国标编号", required = true)
    @Parameter(name = "startTime", description = "开始时间", required = true)
    @Parameter(name = "endTime", description = "结束时间", required = true)
    @GetMapping("/start/{deviceId}/{channelId}")
    public DeferredResult<WVPResult<StreamContent>> start(HttpServletRequest request, @PathVariable String deviceId, @PathVariable String channelId,
                                                          String startTime, String endTime) {

        if (log.isDebugEnabled()) {
            log.debug(String.format("设备回放 API调用，deviceId：%s ，channelId：%s", deviceId, channelId));
        }

        String uuid = UUID.randomUUID().toString();
        String key = DeferredResultHolder.CALLBACK_CMD_PLAYBACK + deviceId + channelId;
        DeferredResult<WVPResult<StreamContent>> result = new DeferredResult<>(userSetting.getPlayTimeout().longValue());
        resultHolder.put(key, uuid, result);

        RequestMessage requestMessage = new RequestMessage();
        requestMessage.setKey(key);
        requestMessage.setId(uuid);
        Device device = deviceService.getDeviceByDeviceId(deviceId);
        if (device == null) {
            log.warn("[录像回放] 未找到设备 deviceId: {},channelId:{}", deviceId, channelId);
            throw new ControllerException(ErrorCode.ERROR100.getCode(), "未找到设备：" + deviceId);
        }

        DeviceChannel channel = channelService.getOne(deviceId, channelId);
        if (channel == null) {
            log.warn("[录像回放] 未找到通道 deviceId: {},channelId:{}", deviceId, channelId);
            throw new ControllerException(ErrorCode.ERROR100.getCode(), "未找到通道：" + channelId);
        }
        playService.playBack(device, channel, startTime, endTime,
                (code, msg, data) -> {

                    WVPResult<StreamContent> wvpResult = new WVPResult<>();
                    if (code == InviteErrorCode.SUCCESS.getCode()) {
                        wvpResult.setCode(ErrorCode.SUCCESS.getCode());
                        wvpResult.setMsg(ErrorCode.SUCCESS.getMsg());

                        if (data != null) {
                            StreamInfo streamInfo = (StreamInfo) data;
                            if (userSetting.getUseSourceIpAsStreamIp()) {
                                streamInfo = streamInfo.clone();//深拷贝
                                String host;
                                try {
                                    URL url = new URL(request.getRequestURL().toString());
                                    host = url.getHost();
                                } catch (MalformedURLException e) {
                                    host = request.getLocalAddr();
                                }
                                streamInfo.channgeStreamIp(host);
                            }
                            wvpResult.setData(new StreamContent(streamInfo));
                        }
                    } else {
                        wvpResult.setCode(code);
                        wvpResult.setMsg(msg);
                    }
                    requestMessage.setData(wvpResult);
                    resultHolder.invokeResult(requestMessage);
                });

        return result;
    }


    @Operation(summary = "停止视频回放", security = @SecurityRequirement(name = JwtUtils.HEADER))
    @Parameter(name = "deviceId", description = "设备国标编号", required = true)
    @Parameter(name = "channelId", description = "通道国标编号", required = true)
    @Parameter(name = "stream", description = "流ID", required = true)
    @GetMapping("/stop/{deviceId}/{channelId}/{stream}")
    public void playStop(
            @PathVariable String deviceId,
            @PathVariable String channelId,
            @PathVariable String stream) {
        if (ObjectUtils.isEmpty(deviceId) || ObjectUtils.isEmpty(channelId) || ObjectUtils.isEmpty(stream)) {
            throw new ControllerException(ErrorCode.ERROR400);
        }
        Device device = deviceService.getDeviceByDeviceId(deviceId);
        if (device == null) {
            throw new ControllerException(ErrorCode.ERROR400.getCode(), "设备：" + deviceId + " 未找到");
        }
        DeviceChannel deviceChannel = channelService.getOneForSource(deviceId, channelId);
        if (deviceChannel == null) {
            throw new ControllerException(ErrorCode.ERROR400.getCode(), "通道：" + deviceChannel + " 未找到");
        }
        playService.stop(InviteSessionType.PLAYBACK, device, deviceChannel, stream);
    }


    @Operation(summary = "回放暂停", security = @SecurityRequirement(name = JwtUtils.HEADER))
    @Parameter(name = "streamId", description = "回放流ID", required = true)
    @GetMapping("/pause/{streamId}")
    public void playPause(@PathVariable String streamId) {
        log.info("playPause: " + streamId);

        try {
            playService.pauseRtp(streamId);
        } catch (ServiceException e) {
            throw new ControllerException(ErrorCode.ERROR400.getCode(), e.getMessage());
        } catch (InvalidArgumentException | ParseException | SipException e) {
            throw new ControllerException(ErrorCode.ERROR100.getCode(), e.getMessage());
        }
    }


    @Operation(summary = "回放恢复", security = @SecurityRequirement(name = JwtUtils.HEADER))
    @Parameter(name = "streamId", description = "回放流ID", required = true)
    @GetMapping("/resume/{streamId}")
    public void playResume(@PathVariable String streamId) {
        log.info("playResume: " + streamId);
        try {
            playService.resumeRtp(streamId);
        } catch (ServiceException e) {
            throw new ControllerException(ErrorCode.ERROR400.getCode(), e.getMessage());
        } catch (InvalidArgumentException | ParseException | SipException e) {
            throw new ControllerException(ErrorCode.ERROR100.getCode(), e.getMessage());
        }
    }


    @Operation(summary = "回放拖动播放", security = @SecurityRequirement(name = JwtUtils.HEADER))
    @Parameter(name = "streamId", description = "回放流ID", required = true)
    @Parameter(name = "seekTime", description = "拖动偏移量，单位s", required = true)
    @GetMapping("/seek/{streamId}/{seekTime}")
    public void playSeek(@PathVariable String streamId, @PathVariable long seekTime) {
        log.info("playSeek: " + streamId + ", " + seekTime);
        InviteInfo inviteInfo = inviteStreamService.getInviteInfoByStream(InviteSessionType.PLAYBACK, streamId);

        if (null == inviteInfo || inviteInfo.getStreamInfo() == null) {
            log.warn("streamId不存在!");
            throw new ControllerException(ErrorCode.ERROR400.getCode(), "streamId不存在");
        }
        Device device = deviceService.getDeviceByDeviceId(inviteInfo.getDeviceId());
        DeviceChannel channel = channelService.getOneById(inviteInfo.getChannelId());
        try {
            cmder.playSeekCmd(device, channel, inviteInfo.getStreamInfo(), seekTime);
        } catch (InvalidArgumentException | ParseException | SipException e) {
            throw new ControllerException(ErrorCode.ERROR100.getCode(), e.getMessage());
        }
    }

    @Operation(summary = "回放倍速播放", security = @SecurityRequirement(name = JwtUtils.HEADER))
    @Parameter(name = "streamId", description = "回放流ID", required = true)
    @Parameter(name = "speed", description = "倍速0.25 0.5 1、2、4", required = true)
    @GetMapping("/speed/{streamId}/{speed}")
    public void playSpeed(@PathVariable String streamId, @PathVariable Double speed) {
        log.info("playSpeed: " + streamId + ", " + speed);
        InviteInfo inviteInfo = inviteStreamService.getInviteInfoByStream(InviteSessionType.PLAYBACK, streamId);

        if (null == inviteInfo || inviteInfo.getStreamInfo() == null) {
            log.warn("streamId不存在!");
            throw new ControllerException(ErrorCode.ERROR400.getCode(), "streamId不存在");
        }
        if (speed != 0.25 && speed != 0.5 && speed != 1 && speed != 2.0 && speed != 4.0) {
            log.warn("不支持的speed： " + speed);
            throw new ControllerException(ErrorCode.ERROR100.getCode(), "不支持的speed（0.25 0.5 1、2、4）");
        }
        Device device = deviceService.getDeviceByDeviceId(inviteInfo.getDeviceId());
        DeviceChannel channel = channelService.getOneById(inviteInfo.getChannelId());
        try {
            cmder.playSpeedCmd(device, channel, inviteInfo.getStreamInfo(), speed);
        } catch (InvalidArgumentException | ParseException | SipException e) {
            throw new ControllerException(ErrorCode.ERROR100.getCode(), e.getMessage());
        }
    }
}
